CN217898526U - Air-bearing structure - Google Patents
Air-bearing structure Download PDFInfo
- Publication number
- CN217898526U CN217898526U CN202221402422.8U CN202221402422U CN217898526U CN 217898526 U CN217898526 U CN 217898526U CN 202221402422 U CN202221402422 U CN 202221402422U CN 217898526 U CN217898526 U CN 217898526U
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- Prior art keywords
- air
- bearing
- hole
- present
- bearing structure
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- Expired - Fee Related
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- 238000013016 damping Methods 0.000 claims description 15
- 238000007667 floating Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model provides an air bearing structure, which comprises an air bearing; the air bearing is in interference fit with the mounting hole of the machine body; the utility model discloses a set up air supporting bearing and organism inner wall interference fit, middle zero clearance can improve the air supporting bearing rigidity, has improved the unchangeable ability that keeps the rotation center, and then improves the whole cutting ability of air supporting main shaft.
Description
Technical Field
The utility model relates to an air supporting electricity main shaft technical field specifically is an air supporting bearing structure.
Background
Referring to fig. 3 and 4, in the conventional air-floating motorized spindle, a plurality of O-rings are usually arranged on the outer circle of an air-floating bearing, and then the conventional air-floating motorized spindle is mounted on a machine body as shown in the figure.
Therefore, the radial rigidity of the air floatation motorized spindle of the air floatation bearing structure is limited by the structure, and generally, the rigidity of the air floatation motorized spindle depends on the strength of the O-shaped ring and is far less than the rigidity of an air film.
An object of the utility model is to provide an air supporting bearing structure has solved the problem of mentioning among the above-mentioned background art.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above object, the present invention provides an air bearing structure, which comprises an air bearing; the air bearing is in interference fit with the mounting hole of the machine body.
Preferably, the air bearing comprises a bearing body and damping plugs, the damping plugs arranged along the radial direction penetrate through the inner side and the outer side of the bearing body, and through holes for guiding air are formed in the damping plugs.
Preferably, the inner diameter of the air inlet end of the through hole is larger than that of the air outlet end.
Preferably, the tail part of the air outlet end of the through hole is expanded outwards to form a horn cavity.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a set up air supporting bearing and organism inner wall interference fit, middle zero clearance can improve the air supporting bearing rigidity, has improved the unchangeable ability that keeps the rotation center, and then improves the whole cutting ability of air supporting main shaft.
Drawings
Fig. 1 is a schematic view of the installation structure of the present invention;
FIG. 2 is a schematic view of the damping plug of the present invention;
FIG. 3 is a schematic view of a prior art air bearing mounting arrangement;
fig. 4 is an enlarged view of the area a of fig. 4.
In the figure: 1. an air bearing; 11. a bearing body; 12. a damping plug; 121. a through hole; 1211. a horn cavity.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the present invention are shown, but the present invention can be implemented in different forms, and is not limited to the embodiments described in the text, and on the contrary, these embodiments are provided so as to make the disclosure more thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The present invention will be described in further detail with reference to the accompanying drawings.
Example one
Referring to fig. 1-2, an air bearing structure includes an air bearing 1; the air bearing 1 is in interference fit with the mounting hole of the machine body.
As can be seen from fig. 1 and 2, the air bearing is arranged in the machine body, the outer circle of the air bearing is in interference fit with the inner wall of the machine body, no gap exists in the middle of the air bearing, and no soft deformation exists.
As a further improvement, the air-bearing 1 includes a bearing body 11 and a plurality of damping plugs 12, the plurality of damping plugs 12 arranged along the radial direction penetrate through the inner side and the outer side of the bearing body 11, and a through hole 121 for guiding air is arranged in the damping plug 12.
As a further improvement, the inner diameter of the air inlet end of the through hole 121 is larger than that of the air outlet end.
As a further improvement, the tail of the air outlet end of the through hole 121 is expanded outward to form a horn-shaped cavity 1211.
The embodiment of the utility model provides a concrete processing technology as follows:
the air-floating bearing comprises a bearing body 11 and a damping plug 12, wherein the damping plug 12 is arranged in the radial direction of the bearing body 11 and is communicated with a middle through hole (a shaft core of an air-floating main shaft passes through the through hole) of the bearing body 11, a through hole 121 is arranged in the damping plug 12, the inner diameter of an air inlet end is larger than that of an air outlet end, and the tail part of the air outlet end is expanded outwards to form a horn cavity 1211 (shown in figure 3); when the high-pressure gas flows through the damping plugs 12 and reaches the air outlet end from the air inlet end, the flow velocity is increased, the bearing capacity of the shaft core is increased, when the gas flow passes through the horn cavity 1211 at the air outlet tail end, no vortex is formed, the pressure loss of the gas film is reduced, the supporting force of the shaft core is increased, and the heat productivity can be reduced.
Example two
The utility model changes the installation mode of the air bearing 1 and redesigns the cooling mode of the air bearing 1;
in this structure, the axle core suspension is located air supporting bearing 1 through hole, when air supporting axle core bears external load, the axle core transmits load power to the air film, the air film transmits load power to bearing body 11, bearing body 11 transmits load power to the organism inner wall, because there is not the clearance between bearing body 11 and the organism inner wall, then bearing body 11 does not take place any displacement, under the reaction force effect, the axle core will maintain former center of rotation and do not take place the skew, only when load is greater than air film rigidity, the air film receives the compression and diminishes, the axle core takes place the displacement, consequently, the rigidity of this technique air supporting electricity main shaft depends on air film rigidity.
The above description is taken as an example to describe the present invention with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, as long as the present invention is adopted, the method concept and the technical solution of the present invention are performed to perform this kind of insubstantial improvement, or the concept and the technical solution of the present invention are directly applied to other occasions without improvement, all within the protection scope of the present invention.
Claims (3)
1. An air bearing structure, its characterized in that: comprises an air-bearing (1);
the air bearing (1) is in interference fit with the mounting hole of the machine body; the air bearing (1) comprises a bearing body (11) and damping plugs (12), the damping plugs (12) arranged along the radial direction penetrate through the inner side and the outer side of the bearing body (11), and through holes (121) used for guiding air are formed in the damping plugs (12).
2. An air bearing structure according to claim 1, wherein: the inner diameter of the air inlet end of the through hole (121) is larger than that of the air outlet end.
3. An air bearing structure according to claim 2, wherein: the tail part of the air outlet end of the through hole (121) expands outwards to form a horn cavity (1211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221402422.8U CN217898526U (en) | 2022-06-07 | 2022-06-07 | Air-bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221402422.8U CN217898526U (en) | 2022-06-07 | 2022-06-07 | Air-bearing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217898526U true CN217898526U (en) | 2022-11-25 |
Family
ID=84130036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221402422.8U Expired - Fee Related CN217898526U (en) | 2022-06-07 | 2022-06-07 | Air-bearing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217898526U (en) |
-
2022
- 2022-06-07 CN CN202221402422.8U patent/CN217898526U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |